Powertrain Control Module: Removal

2004 Oldsmobile Bravada AWDSECTION Removal
WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Record the Transaxle Fluid and Engine Oil Life Indexes from the Driver Information Center (DIC). Turn ignition off. Disconnect the negative battery cable. See NEGATIVE BATTERY CABLE  under MISCELLANEOUS. Disconnect the Mass Airflow/Intake Air Temperature (MAF/IAT) sensor electrical connector. Loosen the intake air duct clamp at the throttle body. Remove the air filter/PCM housing cover screws. See Figure . Remove the air filter/PCM cover, the MAF/IAT sensor and the intake air duct. Disconnect both PCM connectors. Remove the PCM.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.